Stave-cutting machine.



"No. 720,400. PATENTD FEB. 10,1903.'

` F. T. BROWN.

STAVE CUTTING MACHNE. 'APPLI oooo oNv EEEEEEEEEEEEE oa.

l1m MODEL,

F. T. BROWN. STAVE CUTTING MACHINE.

PATEN'IBD FEB. 10,4 1903.

APPLIOATTON IE-"ILED JUNE 2. 1902.

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kNol 720,400. y PATENTED FEB..10,. 1903..A

' F. T. BROWN.

STAVE CUTTING MAGHINE.

v APPLIUATION FILED JUNE 2. 1902.

No MODEL.

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APPLIoATIoN FILED JUNE 2. 1902,.

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@XN 'in una I atbounq *No. l'120,400.

PATENTE) FEB. 1o, 1903. r F. T. BROWN. sTAvE GUTTING MACHINE.

PPLIOATION FILED JUNI-.1 2, 1,902.

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vNirED STATES FRANK T. BROWN, OF DALE, INDIANA.

STAVYE-CU'IFTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 720,400, dated February10, 1903. Appnmtn medium 2,1902. serial 110.109,975. (Numan.)

To all whom it may concern: l

Be it known that I, FRANK T. BROWN, a citizen of the United States,residing at Dale, in the county of Spencer and State of Indiana, haveinvented new and usefullmprovements in Stave-Outting Machines, of whichthe following is a speciiication.V

My invention relates to new and useful improvements in machines forcutting staves for barrels, kegs, tanks, &c.; and itsv object is toprovide means whereby the edge of a strip of wood may be quickly andaccurately curved and beveled.

A further object is to employ a carriage having novel means for feedingit toward and from the cutting mechanism.

Another object is to provide means for holding the stave securely inposition during the cutting operation and automatically discharging thesame thereafter.

Other objects are to provide means for adj usting the cutting devicetoproduce the desired bevel upon the stave, toprovide means forautomatically throwing-@the carriage out of operation when the cuttingof each stave is' completed, and to employ means whereby the carriage isdriven in either direction from the shaft of the cutting device; and `itconsists in ya construction and arrangement of parts, as will behereinafter described, and more particularly pointed out in the claims.

In the accompanying drawings; Figure 1 is a perspective view of thecomplete apparatus. Fig.v 2 is a front elevation, the 'track beingbroken away to show the carriage-operating drum and the automaticshifting mechanism. Fig. 3 is a plan view. Fig. 4 is a section on line 44, Fig. 3. Fig. 5 is a plan view of the carriage with the clampingmechanism removed and a portion of the ejecting mechanism broken away toshow the draw-head. Fig. 6 is a section on line 6 6, Fig. 5. Fig. 7 is arear elevation of the cutting mechanism. Fig. 8 is an elevation of thegrooved pulley.

Referring to the drawings by numerals of reference, 1 is a rectangularframe having laterally-extending arms 2, which serve to supportl a track3, extending across the front face of the frame adjacent to the topthereof. Cross-strips 4 are varranged within the upper end of the frame1, and a drive-shaft 5 is journaled thereon. This shaft is provided atthe forward end with a circular saw 6, and a small pulley 7,'preferablyformed of paper, is located atthe opposite end of said shaft. A suitablepulley 8 is arranged upon the shaft at a point intermediate its ends andis adapted to be driven inv any suitable manner. Each of thecross-strips 4 is adjustably secured at their outer ends to the uprightportions of frame 1. by adjusting them vertically the shaft 5 can bearranged at Vany desired incline.

A slot 9, as shown in Fig. 2, is formed at one side of frame 1 at apoint below shaft 5 and serves asga guide for a shaft 10, extendingthrough the yframe and journaled at one end in one sideof'the track 3and at the other end within a lever ll. This lever, as shown in Fig. 7,is pivoted to the rear end of the frame 1 and is formed with slots 12and 13, which are adapted to receive the shaft 10 and one end of an arm14, respectively. This armv extends laterally from a rod 15, mounted inbrackets 16 at the side of. the frame. An arm 17 is arranged at theforward end of said rod and is connected, by means of a link 18, with alever 19, pivoted to the frame. The rod-15 is also provided with an arm20, which curves upward between the rails of the track 3.and is providedat itsend with a roller 21. A spring 22 is secured to a short arm 23,extending from the opposite sidevof the rod 15 andis connected to aguide-rod 24, mounted upon the frame 1 and serving to prevent lateralmovement of the level' 19. A pulley 25 is secured upon the rear end ofshaft 10 and provided in one face with a groove 26. This groove isadapted to receive the small pulley 7, hereinbefore referred to, and isof` sufficient width to permit a slight vertical movement of eithershaft 10 or 5 before the pulley 7 will contact withl either side of saidgroove. A drum 27 lis secured upon shaft 10 at a point between the railsof track 3, and cables 2S and 29 are secured thereto and adapted to bewound thereon in opposite directions. Y

A rail 30 is secured upon one side of the track 3 and is curvedtoconforln with the edge of the stave to be cut. YThis rail serves as aguide for grooved wheels 3l of a carriage 32. A tongue 33 extendsforward from the carriage and is connected to the cable 2S, hereinbeforereferred to. Said tongue also It will thus be seen thatv IOO extends adesired distance to the rear of the carriage and is provided with apulley 34, upon which is mounted the cable 29. The end of this cable issecured to a draw-head 35, slidably mounted within the rear end ofcarriage 32 and held normally retracted by means of a spring 36. Abeveled arm 37 is pivoted to the forward end of carriage 32 and is heldat a desired incline Yby Vmeans of a slotted link 38, adjustably securedto the forward end of the carriage in any suitable manner, as by meansof a clamping-screw 39.

The carriage 32 is provided at one side with a solid top 40, which isslotted transversely, as shown at 41, to receive sliding bars 42. Thesebars are pivoted to the outer ends of levers 43, fulcrumed at one sideof the carriage and connected at their adjacent ends by means of links44 with a fulcrum-bar45, having its outer end arranged to operate underthe rear sliding bar 42, said fulcrum-bar being forced laterally bymeans of a spring 46, secured to the solid top 40 and to said fulcrum-bar. Rods 47 extend upward from the top 40 and through aclamping-board 4S, arranged upon said top. Springs 49 are arranged uponthese rods and bear upon the board 48, serving to hold the same normallyclamped upon the carriage-top. Levers 50 are pivoted to one edge of theclamping board or member 48, and the lowerends thereof are provided withcam-faces 51, which are adapted to bear upon the top of the carriage.The upper ends of the levers are connected by a horizontal rod 52, whichis also pivoted to a lever 53, fulcrumed upon the side of the clampingmember 48 and extending to a point below the carriage 32. The end of thecarriage serves to limit the movement of this lever in one direction anda headed rod 54 limits the movement thereof in the opposite direction,said rod being mounted in an aperture formed within the end of thecarriage.

A trip 55, having a beveled upper face, is arranged upon one of the arms2 of frame 1 at apoint slightly removed from a lug or stop 56, alsoarranged upon said arm. The trip 55 is adapted to operate lever 53 whenthe same is drawn thereover during the movement of carriage 32, and thestop 56 serves to hold said lever in position after becoming releasedfrom the trip.

Suitable brace-rods 57 may be employed for preventing lateral movementor sagging of the track in relation to the frame l, and one or two ofthe curved rails 30 may be employed upon the track, as desired.

In operation the rail 30 is secured upon track 3 in such a manner thatthe curve thereof will conform to the curve of the edge of the stave tobe cut. The carriage 32 is drawn back upon the track a sufficientdistance to permit the roller 21 and its arm 2O to be slightly depressedby the beveled arm 37, eX- tending from the carriage. This will causethe rod 15 to partly revolve, thereby swinging the lever 11 downward andcarrying the shaft 10 and its pulley 25 therewith a suicient distance toremove the sides of the groove 26 from contact with pulley 7. Thedrive-shaft 5 can then be revolved without operating the shaft 10 andthe carriage connected thereto. Vhile the carriage is out of operation,as above described, a strip which is to be shaped into a stave is placedbetween the top 40 and the clamping member 48 and the sliding bars 42are pressed laterally thereby. This will cause the spring 46 to becomecompressed. The operating-lever 19 is then pressed downward, and thiswill cause the rod 15 to swing its arm 14 downward and will bring theouter wall of groove 26 into contact with pulley 7. Shaft 10 will thusbe revolved, and the drum 27 will operate the cables 28 and 29 thereonas the same are inverted in their order of winding and unwinding. Thiswill cause the carriage 32 to move forward upon the track, and at thebeginning of such movement trip 55 will throw the upper end of lever 53forward, thereby releasing the board 4S and permitting the springs 49 toclamp the same upon the stave and hold the sliding bars 42 in position.The carriage will be guided forward upon the curved rail 30, and thestrip held within the clamp will be cut with the desired curved edge andsaid edge will be beveled according to the incline at which the circularsaw 6 is held. When the carriage reaches the forward end of the track 3,the operating-lever 19 is released and will be promptly raised by thespring 22, which at the same time will throw the roller 21 upward intothe path of the beveled arm 37 and will raise the pulley 25, so as tobring the inner wall of its groove 26 into contact with pulley 7. Therevolution of shaft 10 will thus be promptly reversed and the drum 27will operate the cables 28 and 29 thereon as the same are inverted intheir o1'- der of winding and unwinding, thereby drawing the carriageback to its original position. J ust prior to the completion of thereturn movement of the carriage 32 the lower end of the lever 53 isbrought into contact with the beveled face of trip 55, causing said1ever to swing upon its fulcrum. The cams 51 will at the same time bepressed upon the top of the carriage and will raise the clamping member48 and compress springs 49. As soon as the stave held between the clampis released in this manner spring 46 expands and presses lever 45outward, thereby causing rods 42 to slide within their guiding-grooves41 and force the stave from the carriage automatically. The operationcan then be repeated, as hereinbefore described.

In the foregoing description I have shown the preferred form of myinvention; but I do not limit myself thereto, as I am aware thatmodifications may be made therein without departing from the spirit orsacrificing any of the advantages thereof, and I therefore re- IOO IIO

mounted beneath the clampingeboard.

2. The combination with a carriage, of sliding bars thereon,spring-operated levers for moving said bars transversely of thecarriage, aclainping-board mounted upon the bars and adapted to preventmovement thereof, cams for raising said board from the bars, and atrip-operated lever for operating the cams.

3. The combination With a carriage, of sliding ejector-bars mounted uponsaid carriage, spring-operated levers connected to the bars and adaptedto impart motion thereto, a clamping-board extending over said bars,

means for holding the board normally pressed upon the bars, cams pivotedto the board and adapted to raise the same from the bars, and atrip-operated lever for operating the cams.

4L. The combination with a frame having a track thereon and a guide-railupon the track, of a carriage thereon,a spring-controlled lever pivotedupon the carriage, laterally-movable ejector-bars mounted upon thecarriage, link-and-lever connections between said ejectors and thespring-controlled lever, a springpressed clamping-board l normallycontacted with the carriage and adapted to prevent movement ofthe ejectors, cams pivoted to the clamping-boards and adapted to raise thesame, a lever for operating said cams, and a trip for operating thelever at the commencement and completion of the movement of thecarriage.

In testimonywhereof I affix my signature in presence of two Witnesses.

FRANK T. BROWN. Witnesses:

WILLIAM G. HILE, CARRIE PENNINGTON.

